British Insects: the Genus Phyllonorycter (Lepidoptera-Gracillariidae)
Associated with trees and shrubs. On Betulaceae, Corylaceae, and Rosaceae; Betula spp. (f. betulae), Corylus, Crataegus, Cydonia (?), Malus, Mespilus (?), Prunus (?), Pyracantha (?), Sorbus, Pyrus (on rosaceous trees and shrubs, according to Bradley; but the list of genuine hosts needs checking from original sources).
Larvae. The larvae mining in leaves; in the upper-side. Found in July, or September to October.
Adults. Face white. Head brown and fuscous. Thorax light chestnut brown.
Wing-span 8–9 mm. Forewings chestnut brown, or reddish ochreous; not clear shining white; not suffused throughout with fuscous; with a well defined basal streak (this slender, bent downwards, traversing to near the middle of the wing and almost meeting the first fascia). The basal streak pale; markedly bent (downwards); not dark-edged above. Forewings with well defined pale strigulae (these slender, only the first pair white, the second pair being coloured but lighter than the background). Costal strigulae 2. Dorsal strigulae 2. Forewings with one transverse pale fascia (with the first pair of strigulae more or less meeting to form a slender, sharply angled fascia), or without transverse pale fasciae. Hindwing cilia fuscous.
Adults abroad May and August.
General comments. This species is notable both for the unusually wide range of recorded food-plants (encompassing at least three quite unrelated plant families) as for its apparent taxonomic selectivity within the Rosaceae. Thus, although ranging widely in the family, its recorded hosts therein are confined to the subfamilies Pyroideae and Prunoideae, apparently to the exclusion of not only all the herbaceous forms, but also of such woody members as the ubiquitous Rosa and Rubus. However, host-plant details of this and the other species need checking from authoritative sources.
Illustrations. • Phyllonorycter corylifoliella, with a range of food-plants. • P. corylifoliella, P. coryli and P. quinnata (as carpinicolella): Stainton (1855) Plate II, under Lithocolletis. • Stainton (1855), Plate II: original legend.. • P. corylifoliella (Hübner) and 5 other species: Hübner, 1796–1819.
To view illustrations with legends giving names in current use, go to the interactive key. This also offers full and partial descriptions, diagnostic descriptions, differences and similarities between taxa, lists of taxa exhibiting or lacking specified attributes, and distributions of character states within any set of taxa, as well as source references and other relevant material.
Cite this publication as: ‘Watson, L., and Dallwitz, M.J. 2003 onwards. British insects: the genus Phyllonorycter (Lepidoptera-Gracillariidae). Version: 29th December 2011. http://delta-intkey.com’.